num = "12345" #把字符串"12345"赋值给num
print (type(num)) #查看字符类型,当前为字符串
print(type(int(num))) #把字符串转换为整数类型并查看打印
print(type(float(num))) #把字符串转换为小数并查看打印


info = {11,22,33,44} #把集合赋值给info
print(type(list(info))) #把集合转换为列表
print(type(tuple(info))) #把集合转换为元组